| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for forming a thick anodic oxide-film on titanium for a photocatalyst, which shows a highly active photocatalytic action and gives superior antimicrobial, deodorizing, and stain-proofing effects. SOLUTION: This method comprises, (1) forming an anodic oxide film on titanium by the first anodizing in an electrolytic bath including phosphoric acid, sulfuric acid, hydrogen peroxide, and added powder of titanium oxide, and (2) re-anodizing the film formed titanium in a mixed bath of ammonium hydrogenfluoride with hydrogen peroxide.
|
